Station caption detection method and digital television terminal

Abstract

The embodiment of the invention discloses a station caption detection method. The method includes the steps of obtaining a video picture image, obtaining position information of a station caption corresponding to the video picture image, obtaining a to-be-recognized image corresponding to the position information from the video picture image, obtaining characteristic information of the station caption corresponding to the video picture image, conducting matching on the to-be-recognized image according to the characteristic information, and obtaining the matching result. The embodiment of the invention further discloses a digital television terminal. By means of the method and the digital television terminal, the error rate is decreased when the station caption is detected through the digital television terminal, and the station caption detection accuracy is improved.

Description

technical field [0001] The invention relates to digital television technology, in particular to a station logo detection method and a digital television terminal. Background technique [0002] With the rapid development of TV technology, there are hundreds of TV programs at all levels. The monitoring department monitors the TV signal in real time to prevent illegal insertion or interference during the broadcasting of the TV program, and to protect the legitimate rights and interests of the TV station, most of them use manual real-time monitoring of the broadcast signal status, but this makes the staff work The intensity is high, the work efficiency is low, and the monitoring accuracy is not high. [0003] The TV station logo is an important symbol of the TV station. At present, the images in the legally broadcast TV signals are all accompanied by the station logo, which has become one of the important semantic information in content-based multimedia retrieval. Therefore, r...

AI Technical Summary

Problems solved by technology

[0004] However, the existing logo-based detection methods are usually based on continuous video frames and pixel changes in the time domain, that is, the method assumes that the content of the video is always changing, and only the logo is the constant area

However, in the case of small changes in the background, the existing technology may misjudge the area with small changes as the logo and detect it, which will lead to wrong detection of the logo

Moreover, with the popularity of Internet TV stations, the sources of films are complex and diverse. For example, some broadcasting channels are written on a certain TV station, but the actual TV programs broadcast are the TV programs of another TV station. Legal, but unable to detect that the broadcast content does not match the broadcast channel

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